Most cultivators vegetate their plants for 4–8 weeks. After this time, a switch to 12 hours of light per day is required to initiate flowering. In contrast, autoflowering plants flower on their own. Provide them with 18–24 hours of light per day throughout veg and flowering, and watch the magic happen.
The vegetative stage in Cannabis plants may last from 3 to 16 weeks, or even more in outdoor crops. Most growers vegetate their indoor plants for 4-8 weeks, depending on the desired plant size. Cannabis plants are usually able to start flowering from the 4th week of the vegetative stage.
In optimal conditions, plants should be kept in their vegetative stage for approximately 60 days. This time period should give the plant the opportunity to maximise yield and acclimatise to growing conditions.
Flowering Indoor Cannabis
Usually, most growers prefer an indoor vegetative period of 4-8 weeks under a 24/0 or 18/6 light period. To grow cannabis successfully indoor, you need to mimic the natural growth pattern.
How Long Does the Veg State Last? Depending on the genetics of your cannabis plants, the veg time can be anywhere between 3 to 16 weeks, and sometimes even longer. Photoperiod cannabis plants end their vegging state when the light cycle starts to get shorter, and then they start flowering.
Week 5. In week 5 of flowering, you can observe the buds all over your plant becoming thicker. You may also spot new buds growing in new places such as along the main cola. With buds abounding, your cannabis plants will get fatter every day.
1. Light intensity. Light is the most important factor when trying to get denser cannabis flowers because lights help cannabis plants produce sugars through the photosynthesis process which helps them grow, just have in mind that not any light will do, weed needs an optimal light intensity to produce big fat buds.
Seedling Stage: It is best to water twice a day, to begin with, but focus on frequency over volume. Vegetative Stage: Daily watering works best if you're using small pots. If you have large containers, switch to watering every two days. Flowering Stage: Water every 2-3 days.
How Big Should My Weed Plants be After 2 Weeks? In most cases your plant should be around 2 to 3 inches tall with 2 to 3 sets of leaves including the cotyledons (seed leaves which are rounded).
Many growers advocate the use of an 18/6 light schedule (18 hours on, six hours off) while plants are in veg.
Most cultivators vegetate their plants for 4–8 weeks. After this time, a switch to 12 hours of light per day is required to initiate flowering.
The light intensity rule of thumb is that a 1% increase in light equals to a 1% percent increase in yield. In a study by Wageninen University, they discovered this to be true of all horticultural crops they evaluated including, fruiting (vine) crops and flowers.
Does topping really increase yield. Some people claim topping does not actually increase yield, because the colas get smaller every time you top. But, it has been shown that the cumulative yield is much heavier when you top your plants. So yes, topping really increases yield.
Height of plant: Depending on the strain, plants will generally double in size during flowering. So, if 'room' height is limited, the switch to 12/12 will need to be done no later than when the plant has reached 50% of the 'available' height (remember to consider the minimum gap distance between lamp and foliage).
You can keep a mother plant for anything between 6 months and 3 years before the plant starts to break down and lose its vigour, yield, smell or other characteristics. At this point you need to find fresh, new, vigourous stock from seed and start the process all over again.
It can take anywhere from 7 to 14 days for a plant to enter the pre-flowering stage. Once it does the sex can be determined by the pre-flower found at the nodes. It becomes easier to figure out the sex when the plant goes deeper into vegetation.
More and more white hairs were growing and the separate little buds steadily grew inwards to form one big bud. After about five weeks of flowering, there will now be hard, crystal-rich buds on your plants.
Seed germination: 1-7 days. Vegetative stage, when the plant is growing just stems and leaves: three weeks to eight weeks or more. Flowering stage, when buds start to appear: five weeks to sixteen weeks or longer. Harvesting, drying, and curing: two to four weeks.
You don't want to use liquid nutrients every time you water—use them every other watering, or two waterings on, one off. It depends on the complexity of your soil and the health of your plants. Too many nutrients will damage your plants. Giving weed plants the proper amount of nutrients requires careful monitoring.
Flushing through watering:
A three-week flushing will completely remove excess mineral buildup from your plants, ensuring the final product is entirely free from impurities. If you opt for a flushing of just two weeks, instead, your weed will be sufficiently clean but will probably contain a small amount of salts.
If you're growing in soil, begin flushing between one and two weeks before harvest. If you're growing in coco, flush your plants for up to one week prior to harvest. If you're growing in hydro, your plants only need to be flushed for one to two days.
Topping to increase the number of colas
Topping is a form of pruning and involves pruning off the branch tip of the main cola. When you top the main cola, the energy goes to the side branches. The next two lateral branches will become the main branches. Topping will increase the overall yield of your grow.
Stop Watering 1-3 Days Before Harvest – After flushing, in the final days of harvest, you can further stress your plants by stopping watering. You want to allow the plant to start to wilt just a small amount, because then the plant “thinks” it is dying and as a last-ditch effort, it will increase resin development.
Waiting longer to harvest gives the trichomes ample time to develop. But the longer you wait, the more highly intoxicating and sedative your flower will become. This is especially true for indica strains, but even sativa strains can become sedating.